Every screen,
before you install.
No mockups and no staged marketing renders — these are the actual screens, captured from the app on a phone and a tablet. Scroll through the whole study loop and decide for yourself.
Library · every book encrypted on import
Read it. Mark it.
Actually remember it.
Six screens, one library. Nothing here needs an account, a connection, or a second app.
Mark it, note it, cite it
Drag across a passage and it is marked in your last colour; long-press a word for handles you can stretch first. One button marks it again or switches colour and between highlight and underline. Attach a typed note, look it up, or copy it with a citation in APA, MLA, Chicago or BibTeX. The highlight anchors to the text itself, so it stays put when you change the font size.
Your highlights, waiting as flashcards
Everything you marked shows up in the Study tab as a spaced-repetition deck, with a deck per book and your streak and recall for the week. Turn a passage into a cloze card by tapping the words to hide. Cards are scheduled with FSRS, which spaces them by how well you actually remember. Already run Anki? Import the .apkg and drill it here.
Look a word up without losing the sentence
Tap an unfamiliar word and the definition opens over the page — the paragraph is still there behind it. If the word is worth keeping, Add to deck turns it into a flashcard on the spot.
Exercises that remember what you typed
Interactive EPUB workbooks render the way the author built them — free-text answers, checkboxes, multiple choice. Everything you enter saves itself as you go. Close the app mid-question and it's still filled in next week.
A chapter that fits a commute
Text-to-speech narrates any book with the current sentence highlighted as it goes, plus speed control, lock-screen controls, and an estimate of how much of the chapter is left. Use the phone's own voices, or download a natural-sounding AI voice, American or British, that runs on the phone. Nothing is uploaded to be read.
Lecture PDFs in the same library
Handouts, papers and scanned course readers sit on the same shelf as your EPUBs, highlight the same way, and feed the same review deck. Dark mode turns the page dark, and one switch leaves scans, charts and maps in their own colours.
Two documents.
One screen.
On a larger screen the layout opens up rather than stretching — a second document, or your notes, alongside what you're reading.
A book and a PDF, side by side
Put the set text next to the lecture handout and read across both. Two documents, one app, no window juggling.
Your notes beside the page
The Gems rail lists every highlight and note in the book, filtered by colour and searchable — open beside the text instead of on top of it.
The whole shelf at a glance
Covers, progress, reading streak, and any PIN-locked folders — the wide layout puts a full term's reading on one screen.
Phone · Tablet · Same library, same annotations
Seen enough?
Open your own book in it.
Free for Android, iPhone and iPad. No sign-up, no cloud, no setup — import a textbook or a PDF and start marking it up in seconds.
Android 10+ · iOS 17+ · EPUB & PDF · Free forever